I am using a opto triac rated at 100C operational. It controls an externa SCR in a very common fashion. The opto Is physically located next to a heat source component making the opto temperature rise reach just a little past its operational temperature when tested in a chamber.
In looking around for a higher rated part I noticed that all OPTO TRIACs are rated either for 85C or 100C but nothing above that. The junction temperature is rated at 125C.
Is there a limitation in opto triac design that a higher rated temperature device is not available? Or do I just have to search harder